Java tutorial
/* * Author: Sunil Soman sunils@cs.ucsb.edu */ package edu.ucsb.eucalyptus.ic; import edu.ucsb.eucalyptus.cloud.*; import edu.ucsb.eucalyptus.msgs.EucalyptusErrorMessageType; import edu.ucsb.eucalyptus.msgs.EucalyptusMessage; import edu.ucsb.eucalyptus.msgs.WalrusBucketErrorMessageType; import edu.ucsb.eucalyptus.transport.binding.BindingManager; import edu.ucsb.eucalyptus.util.ReplyCoordinator; import org.apache.http.HttpStatus; import org.apache.log4j.Logger; import org.mule.message.ExceptionMessage; import java.net.Inet6Address; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.util.Collections; import java.util.List; /******************************************************************************* * Copyright (c) 2009 Eucalyptus Systems, Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, only version 3 of the License. * * * This file is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see <http://www.gnu.org/licenses/>. * * Please contact Eucalyptus Systems, Inc., 130 Castilian * Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/> * if you need additional information or have any questions. * * This file may incorporate work covered under the following copyright and * permission notice: * * Software License Agreement (BSD License) * * Copyright (c) 2008, Regents of the University of California * All rights reserved. * * Redistribution and use of this software in source and binary forms, with * or without modification, are permitted provided that the following * conditions are met: * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USERS OF * THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE * LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS * SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING * IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA * BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN * THE REGENTS DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT * OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR * WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH * ANY SUCH LICENSES OR RIGHTS. ******************************************************************************/ public class WalrusReplyQueue { private static Logger LOG = Logger.getLogger(WalrusReplyQueue.class); private static ReplyCoordinator replies = new ReplyCoordinator(3600000); private static int SC_DECRYPTION_FAILED = 566; public void handle(EucalyptusMessage msg) { replies.putMessage(msg); } public void handle(ExceptionMessage muleMsg) { try { Object requestMsg = muleMsg.getPayload(); String requestString = requestMsg.toString(); EucalyptusMessage msg = (EucalyptusMessage) BindingManager.getBinding("msgs_eucalyptus_ucsb_edu") .fromOM(requestString); Throwable ex = muleMsg.getException().getCause(); EucalyptusMessage errMsg; String ipAddr = "127.0.0.1"; List<NetworkInterface> ifaces = null; try { ifaces = Collections.list(NetworkInterface.getNetworkInterfaces()); } catch (SocketException e1) { } for (NetworkInterface iface : ifaces) { try { if (!iface.isLoopback() && !iface.isVirtual() && iface.isUp()) { for (InetAddress iaddr : Collections.list(iface.getInetAddresses())) { if (!iaddr.isSiteLocalAddress() && !(iaddr instanceof Inet6Address)) { ipAddr = iaddr.getHostAddress(); break; } } } } catch (SocketException e1) { } } if (ex instanceof NoSuchBucketException) { errMsg = new WalrusBucketErrorMessageType(((NoSuchBucketException) ex).getBucketName(), "NoSuchBucket", "The specified bucket was not found", HttpStatus.SC_NOT_FOUND, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof AccessDeniedException) { errMsg = new WalrusBucketErrorMessageType(((AccessDeniedException) ex).getBucketName(), "AccessDenied", "No U", HttpStatus.SC_FORBIDDEN, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof NotAuthorizedException) { errMsg = new WalrusBucketErrorMessageType(((NotAuthorizedException) ex).getValue(), "Unauthorized", "No U", HttpStatus.SC_UNAUTHORIZED, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof BucketAlreadyOwnedByYouException) { errMsg = new WalrusBucketErrorMessageType(((BucketAlreadyOwnedByYouException) ex).getBucketName(), "BucketAlreadyOwnedByYou", "Your previous request to create the named bucket succeeded and you already own it.", HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof BucketAlreadyExistsException) { errMsg = new WalrusBucketErrorMessageType(((BucketAlreadyExistsException) ex).getBucketName(), "BucketAlreadyExists", "The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again.", HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof BucketNotEmptyException) { errMsg = new WalrusBucketErrorMessageType(((BucketNotEmptyException) ex).getBucketName(), "BucketNotEmpty", "The bucket you tried to delete is not empty.", HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof PreconditionFailedException) { errMsg = new WalrusBucketErrorMessageType(((PreconditionFailedException) ex).getPrecondition(), "PreconditionFailed", "At least one of the pre-conditions you specified did not hold.", HttpStatus.SC_PRECONDITION_FAILED, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof NotModifiedException) { errMsg = new WalrusBucketErrorMessageType(((NotModifiedException) ex).getPrecondition(), "NotModified", "Object Not Modified", HttpStatus.SC_NOT_MODIFIED, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof TooManyBucketsException) { errMsg = new WalrusBucketErrorMessageType(((TooManyBucketsException) ex).getBucketName(), "TooManyBuckets", "You have attempted to create more buckets than allowed.", HttpStatus.SC_BAD_REQUEST, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof EntityTooLargeException) { errMsg = new WalrusBucketErrorMessageType(((EntityTooLargeException) ex).getEntityName(), "EntityTooLarge", "Your proposed upload exceeds the maximum allowed object size.", HttpStatus.SC_BAD_REQUEST, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof NoSuchEntityException) { errMsg = new WalrusBucketErrorMessageType(((NoSuchEntityException) ex).getBucketName(), "NoSuchEntity", "The specified entity was not found", HttpStatus.SC_NOT_FOUND, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof DecryptionFailedException) { errMsg = new WalrusBucketErrorMessageType(((DecryptionFailedException) ex).getValue(), "Decryption Failed", "Fail", SC_DECRYPTION_FAILED, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof ImageAlreadyExistsException) { errMsg = new WalrusBucketErrorMessageType(((ImageAlreadyExistsException) ex).getValue(), "Image Already Exists", "Fail", HttpStatus.SC_CONFLICT, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else if (ex instanceof NotImplementedException) { errMsg = new WalrusBucketErrorMessageType(((NotImplementedException) ex).getValue(), "Not Implemented", "NA", HttpStatus.SC_NOT_IMPLEMENTED, msg.getCorrelationId(), ipAddr); errMsg.setCorrelationId(msg.getCorrelationId()); } else { errMsg = new EucalyptusErrorMessageType(muleMsg.getComponentName(), msg, ex.getMessage()); } replies.putMessage(errMsg); } catch (Exception e) { LOG.error(e, e); } } public static EucalyptusMessage getReply(String msgId) { EucalyptusMessage msg = null; msg = replies.getMessage(msgId); LOG.info("walrus got reply to: " + msgId); return msg; } }